Beam indication method, terminal, network device, communication system, and storage medium

Abstract

The present disclosure relates to a beam indication method, a terminal, a network device, a communication system, and a storage medium. The method comprises: a terminal receives indication information, the indication information being used for indicating TCI state code points in a TCI state code point pool, and the TCI state code points being used in downlink single transmission reception point (S-TRP) and uplink multiple transmission reception point (M-TRP) communication scenarios; wherein the indication information is a TCI information indication domain in downlink control information (DCI), different code points in the TCI state code point pool correspondingly indicate one or more TCI states, the multiple TCI states correspond to multiple transmission reception points (TRPs), the multiple TRPs are used for the terminal to perform downlink transmission and / or uplink transmission and comprise a TRP dedicated to uplink transmission, and different TRPs are configured with different SRS resource sets having the function of beam management. In the present disclosure, the TCI state code points in the TCI state code point pool are indicated by means of the indication information, so that TCI state code points are indicated, and thus beams for M-TRP transmission can be configured and indicated by means of the TCI state code points.

Description

Beam indication method, terminal, network device, communication system and storage medium Technical Field

[0001] The present disclosure relates to the field of communication technologies, and in particular to a beam indication method, a terminal, a network device, a communication system, and a storage medium. Background Art

[0002] With the advancement of communication technologies, heterogeneous network deployments can enable the use of asymmetric multiple transmission reception points (TRPs) for communication transmission, thereby improving uplink coverage and throughput. In a multi-TRP scenario, a cell includes a master next-generation Node B (gNB) and multiple uplink TRPs. Uplink multi-TRP transmission can be coordinated between the master gNB and the uplink TRP, or between different uplink TRPs.

[0003] Summary of the Invention

[0004] In a multi-TRP scenario, how network equipment indicates beam information to the terminal is a technical problem that needs to be solved.

[0005] The embodiments of the present disclosure provide a beam indication method, a terminal, a network device, a communication system, and a storage medium.

[0006] According to the first aspect of an embodiment of the present disclosure, a beam indication method is proposed, the method comprising: a terminal receives indication information, the indication information being used to indicate a TCI status code point in a TCI status code point pool, the TCI status code point being used in a communication scenario of a downlink single transmission node S-TRP and an uplink multiple transmission node M-TRP; wherein the indication information is a TCI information indication field in downlink control information DCI, different code points in the TCI status code point pool correspond to one or more TCI states, multiple TCI states correspond to multiple transmission node TRPs, the multiple TRPs are used for the terminal to perform downlink transmission and / or uplink transmission, and include a TRP dedicated to uplink transmission, and different TRPs are configured with different SRS resource sets whose function is beam management.

[0007] According to the second aspect of an embodiment of the present disclosure, a beam indication method is proposed, the method comprising: a network device sends indication information, the indication information being used to indicate a TCI status code point in a TCI status code point pool, the TCI status code point being used in a communication scenario of a downlink single transmission node S-TRP and an uplink multiple transmission node M-TRP; wherein the indication information is a TCI information indication field in the downlink control information DCI, different code points in the TCI status code point pool correspond to one or more TCI states, multiple TCI states correspond to multiple transmission node TRPs, the multiple TRPs are used for the terminal to perform downlink transmission and / or uplink transmission, and include a TRP dedicated to uplink transmission, and different TRPs are configured with different SRS resource sets whose function is beam management.

[0008] According to the third aspect of an embodiment of the present disclosure, a beam indication method is proposed, the method comprising: a network device sends indication information, the indication information being used to indicate a TCI status code point in a TCI status code point pool, the TCI status code point being used in a communication scenario of a downlink single transmission node S-TRP and an uplink multiple transmission node M-TRP; wherein the indication information is a TCI information indication field in downlink control information DCI, different code points in the TCI status code point pool correspond to one or more TCI states, multiple TCI states correspond to multiple transmission node TRPs, the multiple TRPs are used for the terminal to perform downlink transmission and / or uplink transmission, and include a TRP dedicated to uplink transmission, and different TRPs are configured with different SRS resource sets functioning as beam management; the terminal receives the indication information.

[0009] According to the fourth aspect of an embodiment of the present disclosure, a terminal is proposed, comprising: a transceiver module for receiving indication information, wherein the indication information is used to indicate a TCI status code point in a TCI status code point pool, and the TCI status code point is used in a communication scenario of a downlink single transmission node S-TRP and an uplink multiple transmission node M-TRP; wherein the indication information is a TCI information indication field in the downlink control information DCI, and different code points in the TCI status code point pool correspond to one or more TCI states, and multiple TCI states correspond to multiple transmission node TRPs. The multiple TRPs are used for the terminal to perform downlink transmission and / or uplink transmission, and include a TRP dedicated to uplink transmission, and different TRPs are configured with different SRS resource sets whose function is beam management.

[0010] According to the fifth aspect of an embodiment of the present disclosure, a network device is proposed, including: a transceiver module for sending indication information, wherein the indication information is used to indicate a TCI status code point in a TCI status code point pool, and the TCI status code point is used in a communication scenario of a downlink single transmission node S-TRP and an uplink multiple transmission node M-TRP; wherein the indication information is a TCI information indication field in the downlink control information DCI, and different code points in the TCI status code point pool correspond to one or more TCI states, and multiple TCI states correspond to multiple transmission node TRPs. The multiple TRPs are used for the terminal to perform downlink transmission and / or uplink transmission, and include a TRP dedicated to uplink transmission, and different TRPs are configured with different SRS resource sets whose function is beam management.

[0011] According to a sixth aspect of an embodiment of the present disclosure, a terminal is proposed, comprising: one or more processors; wherein the terminal is used to execute the first aspect and any one of the beam indication methods in the first aspect.

[0012] According to a seventh aspect of an embodiment of the present disclosure, a network device is proposed, comprising: one or more processors; wherein the network device is used to execute the second aspect and any one of the beam indication methods in the second aspect.

[0013] According to the eighth aspect of an embodiment of the present disclosure, a communication system is proposed, comprising a terminal and a network device, wherein the terminal is configured to implement the first aspect and any one of the beam indication methods in the first aspect, and the network device is configured to implement the second aspect and any one of the beam indication methods in the second aspect.

[0014] According to the ninth aspect of an embodiment of the present disclosure, a storage medium is proposed, which stores instructions. When the instructions are executed on a communication device, the communication device executes a beam indication method such as the first aspect and any one of the first aspects or the second aspect and any one of the second aspects.

[0015] The present disclosure indicates the TCI status code point in the TCI status code point pool through indication information to indicate the TCI status code point, thereby enabling the configuration and indication of the beam used for MTRP transmission through the TCI status code point. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following drawings required for describing the embodiments are introduced. The following drawings are merely some embodiments of the present disclosure and do not impose specific limitations on the protection scope of the present disclosure.

[0017] FIG1A is an exemplary schematic diagram of the architecture of a communication system provided according to an embodiment of the present disclosure.

[0018] FIG1B is a schematic diagram of multi-PANEL / TRP transmission based on single PDCCH scheduling.

[0019] FIG1C is a schematic diagram of multi-PANEL / TRP transmission based on different PDCCH scheduling.

[0020] FIG1D is a schematic diagram of transmission based on the SDM spatial division multiplexing scheme.

[0021] FIG. 1E is a schematic diagram of transmission based on the SDM spatial division multiplexing scheme.

[0022] FIG1F is a schematic diagram of MAC CE signaling for unified TCI state activation / deactivation.

[0023] FIG1G is a schematic diagram of MAC CE signaling for joint / independent TCI state activation / deactivation in an MTRP scenario.

[0024] FIG1H is a schematic diagram of MAC CE signaling for independent TCI state activation / deactivation.

[0025] FIG. 1I is a schematic diagram of the cell node functions in a macro cell.

[0026] FIG1J is a schematic diagram of the cell node function in a communication scenario with multiple uplink receiving points.

[0027] Figure 1K is a schematic diagram of a communication scenario with single downlink TRP transmission and multiple uplink TRP transmission.

[0028] FIG2 is an interactive schematic diagram of a beam indication method according to an embodiment of the present disclosure.

[0029] FIG3 is a schematic flow chart of a beam indication method according to an embodiment of the present disclosure.

[0030] FIG4 is a schematic flow chart of a beam indication method according to an embodiment of the present disclosure.

[0031] FIG5A is a schematic structural diagram of a terminal proposed in an embodiment of the present disclosure.

[0032] FIG5B is a schematic diagram of the structure of the network device proposed in an embodiment of the present disclosure.

[0033] FIG6A is a schematic structural diagram of a communication device proposed in an embodiment of the present disclosure.

[0034] FIG6B is a schematic diagram of the structure of a chip proposed in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0035] The embodiments of the present disclosure provide a beam indication method, a terminal, a network device, a communication system, and a storage medium.

[0036] In the first aspect, an embodiment of the present disclosure proposes a beam indication method, the method comprising: a terminal receives indication information, the indication information being used to indicate a TCI status code point in a TCI status code point pool, the TCI status code point being used in a communication scenario of a downlink single transmission node S-TRP and an uplink multiple transmission node M-TRP; wherein the indication information is a TCI information indication field in the downlink control information DCI, different code points in the TCI status code point pool correspond to one or more TCI states, multiple TCI states correspond to multiple transmission node TRPs, the multiple TRPs are used for the terminal to perform downlink transmission and / or uplink transmission, and include a TRP dedicated to uplink transmission, and different TRPs are configured with different SRS resource sets whose function is beam management.

[0037] In the above embodiment, the indication information sent to the terminal indicates a TCI status code point in a TCI status code point pool. Since the TCI status code points in the TCI status pool can be used to indicate one or more TCI states, the indication information indicates the TCI state in the scenario, thereby enabling the configuration and indication of beams used for MTRP transmission using the TCI status code point.

[0038] In combination with some embodiments of the first aspect, in some embodiments, when the TCI status code point is configured as a hybrid TCI status indication mode or a joint TCI status indication mode, the indication information is used to indicate: a joint TCI status and an uplink TCI status.

[0039] In the above embodiment, the TCI state combinations corresponding to the hybrid TCI state indication mode and the joint TCI state indication mode can be clearly defined.

[0040] In combination with some embodiments of the first aspect, in some embodiments, when the TCI status code point is configured as an independent TCI status indication mode, the indication information is used to indicate the uplink TCI status and the downlink TCI status.

[0041] In the above embodiment, the TCI state combination corresponding to the independent TCI state indication mode can be clearly defined.

[0042] In combination with some embodiments of the first aspect, in some embodiments, the indication information is used to indicate 1 joint TCI state and N uplink TCI states, where N is an integer less than or equal to 2.

[0043] In the above embodiment, different numbers of uplink TCI states can be indicated in different situations, thereby improving the robustness of the communication system.

[0044] In combination with some embodiments of the first aspect, in some embodiments, the bit width of the TCI information indication field corresponds to the number of the TCI status code points.

[0045] In combination with some embodiments of the first aspect, in some embodiments, the N is determined based on the number of multiple collaborative TRPs corresponding to the terminal, and the number of multiple collaborative TRPs corresponding to the terminal is determined based on the capability of the terminal; wherein, when the value of N is 0, the terminal corresponds to S-TRP transmission; when the value of N is 1 or 2, the terminal corresponds to M-TRP transmission.

[0046] In the above embodiment, different numbers of TCI states can be indicated based on the terminal capability, thereby ensuring the stability of the communication system.

[0047] In combination with some embodiments of the first aspect, in some embodiments, the different TCI state code points correspond to one or more of the following TCI state types: joint TCI state; uplink TCI state; downlink TCI state; the uplink TCI state corresponds to an independently configured TCI state code point pool, the downlink TCI state and the joint TCI state correspond to the same TCI state code point pool, and the independently configured TCI state code point pool and the same TCI state code point pool are respectively configured through RRC signaling.

[0048] In conjunction with some embodiments of the first aspect, in some embodiments, the multiple TCI states correspond to the transmission of multiple TRPs, including:

[0049] The multiple TCI states correspond to the transmission of multiple TRPs based on single downlink control information S-DCI, or the multiple TCI states correspond to the transmission of multiple TRPs based on multiple downlink control information M-DCI.

[0050] In combination with some embodiments of the first aspect, in some embodiments, the indication information is carried in a media access control element MAC CE.

[0051] According to a second aspect, a beam indication method is provided, the method comprising: a network device sends indication information, the indication information being used to indicate a TCI status code point in a TCI status code point pool, the TCI status code point being used in a communication scenario of a downlink single transmission node S-TRP and an uplink multiple transmission node M-TRP; wherein the indication information is a TCI information indication field in the downlink control information DCI, different code points in the TCI status code point pool correspond to one or more TCI states, multiple TCI states correspond to multiple transmission node TRPs, the multiple TRPs are used for the terminal to perform downlink transmission and / or uplink transmission, and include a TRP dedicated to uplink transmission, and different TRPs are configured with different SRS resource sets whose function is beam management.

[0052] In the above embodiment, the indication information sent to the terminal indicates a TCI status code point in a TCI status code point pool. Since the TCI status code points in the TCI status pool can be used to indicate one or more TCI states, the indication information indicates the TCI state in the scenario, thereby enabling the configuration and indication of beams used for MTRP transmission using the TCI status code point.

[0053] In combination with some embodiments of the second aspect, in some embodiments, when the TCI status code point is configured as a hybrid TCI status indication mode or a joint TCI status indication mode, the indication information is used to indicate: a joint TCI status and an uplink TCI status.

[0054] In the above embodiment, the TCI state combinations corresponding to the hybrid TCI state indication mode and the joint TCI state indication mode can be clearly defined.

[0055] In combination with some embodiments of the second aspect, in some embodiments, when the TCI status code point is configured as an independent TCI status indication mode, the indication information is used to indicate the uplink TCI status and the downlink TCI status.

[0056] In the above embodiment, the TCI state combination corresponding to the independent TCI state indication mode can be clearly defined.

[0057] In combination with some embodiments of the second aspect, in some embodiments, the indication information is used to indicate 1 joint TCI state and N uplink TCI states, where N is an integer less than or equal to 2.

[0058] In the above embodiment, different numbers of uplink TCI states can be indicated in different situations, thereby improving the robustness of the communication system.

[0059] In combination with some embodiments of the second aspect, in some embodiments, the bit width of the TCI information indication field corresponds to the number of the TCI status code points.

[0060] In combination with some embodiments of the second aspect, in some embodiments, the N is determined based on the number of multiple collaborative TRPs corresponding to the terminal, and the number of multiple collaborative TRPs corresponding to the terminal is determined based on the capability of the terminal; wherein, when the value of N is 0, the terminal corresponds to S-TRP transmission; when the value of N is 1 or 2, the terminal corresponds to M-TRP transmission.

[0061] In the above embodiment, different numbers of TCI states can be indicated based on the terminal capability, thereby ensuring the stability of the communication system.

[0062] In combination with some embodiments of the second aspect, in some embodiments, the different TCI state code points correspond to one or more of the following TCI state types: joint TCI state; uplink TCI state; downlink TCI state; the uplink TCI state corresponds to an independently configured TCI state code point pool, the downlink TCI state and the joint TCI state correspond to the same TCI state code point pool, and the independently configured TCI state code point pool and the same TCI state code point pool are respectively configured through RRC signaling.

[0063] In conjunction with some embodiments of the second aspect, in some embodiments, the multiple TCI states correspond to the transmission of multiple TRPs, including:

[0064] The multiple TCI states correspond to the transmission of multiple TRPs based on single downlink control information S-DCI, or the multiple TCI states correspond to the transmission of multiple TRPs based on multiple downlink control information M-DCI.

[0065] In combination with some embodiments of the second aspect, in some embodiments, the indication information is carried in a media access control element MAC CE.

[0066] According to a third aspect, a beam indication method is provided, the method comprising: a network device sends indication information, the indication information being used to indicate a TCI status code point in a TCI status code point pool, the TCI status code point being used in a communication scenario of a downlink single transmission node S-TRP and an uplink multiple transmission node M-TRP; wherein the indication information is a TCI information indication field in downlink control information DCI, different code points in the TCI status code point pool correspond to one or more TCI states, multiple TCI states correspond to multiple transmission node TRPs, the multiple TRPs are used for the terminal to perform downlink transmission and / or uplink transmission, and include a TRP dedicated to uplink transmission, and different TRPs are configured with different SRS resource sets functioning as beam management; the terminal receives the indication information.

[0067] In a fourth aspect, a terminal is provided, comprising: a transceiver module for receiving indication information, wherein the indication information is used to indicate the TCI status code point in the TCI status code point pool, and the TCI status code point is used in the communication scenario of the downlink single transmission node S-TRP and the uplink multiple transmission node M-TRP; wherein the indication information is the TCI information indication field in the downlink control information DCI, and different code points in the TCI status code point pool correspond to one or more TCI states, and multiple TCI states correspond to multiple transmission nodes TRP. The multiple TRPs are used for the terminal to perform downlink transmission and / or uplink transmission, and include a TRP dedicated to uplink transmission, and different TRPs are configured with different SRS resource sets with the function of beam management.

[0068] In the fifth aspect, a network device is provided, including: a transceiver module for sending indication information, wherein the indication information is used to indicate the TCI status code point in the TCI status code point pool, and the TCI status code point is used in the communication scenario of the downlink single transmission node S-TRP and the uplink multiple transmission node M-TRP; wherein the indication information is the TCI information indication field in the downlink control information DCI, and different code points in the TCI status code point pool correspond to one or more TCI states, and multiple TCI states correspond to multiple transmission nodes TRP. The multiple TRPs are used for the terminal to perform downlink transmission and / or uplink transmission, and include a TRP dedicated to uplink transmission, and different TRPs are configured with different SRS resource sets with the function of beam management.

[0069] In a sixth aspect, a terminal is provided, comprising: one or more processors; wherein the terminal is used to execute the first aspect and any one of the beam indication methods in the first aspect.

[0070] In the seventh aspect, a network device is provided, comprising: one or more processors; wherein the network device is used to execute the second aspect and any one of the beam indication methods in the second aspect.

[0071] In the eighth aspect, a communication system is provided, including a terminal and a network device, wherein the terminal is configured to implement the first aspect and any one of the beam indication methods in the first aspect, and the network device is configured to implement the second aspect and any one of the beam indication methods in the second aspect.

[0072] In the ninth aspect, a storage medium is provided, which stores instructions. When the instructions are executed on a communication device, the communication device executes a beam indication method such as the first aspect and any one of the first aspects or the second aspect and any one of the second aspects.

[0073] In a tenth aspect, an embodiment of the present disclosure proposes a program product. When the program product is executed by a communication device, the communication device executes the method described in the optional implementation manner of the first aspect or the second aspect.

[0074] In an eleventh aspect, an embodiment of the present disclosure proposes a computer program, which, when executed on a computer, enables the computer to execute the method described in the optional implementation of the first or second aspect.

[0075] In a twelfth aspect, an embodiment of the present disclosure provides a chip or a chip system, wherein the chip or chip system includes a processing circuit configured to execute the method described in the optional implementation of the first or second aspect.

[0076] It is understandable that the terminal, access network device, first network element, other network elements, core network device, communication system, storage medium, program product, computer program, chip, or chip system involved in each embodiment of the present disclosure are all used to perform the method proposed in the embodiment of the present disclosure. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects of the corresponding method and will not be repeated here.

[0077] The present disclosure provides a beam indication method, terminal, network device, communication system, and storage medium. In some embodiments, the terms "communication method," "information processing method," and "communication method" are interchangeable; the terms "communication device," "information processing device," and "communication device" are interchangeable; and the terms "information processing system," "communication system," and "communication system" are interchangeable.

[0078] The embodiments of the present disclosure are not exhaustive and are merely illustrative of some embodiments, and are not intended to be a specific limitation on the scope of protection of the present disclosure. In the absence of contradiction, each step in a certain embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a certain embodiment can also be implemented as an independent embodiment, and the order of the steps in a certain embodiment can be arbitrarily exchanged. In addition, the optional implementation methods in a certain embodiment can be arbitrarily combined; in addition, the embodiments can be arbitrarily combined. For example, some or all steps of different embodiments can be arbitrarily combined, and a certain embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0079] In each embodiment of the present disclosure, unless otherwise specified or provided for, the terms and / or descriptions between the embodiments are consistent and may be referenced by each other. The technical environments in different embodiments may be combined to form new embodiments based on their inherent logical relationships.

[0080] The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure.

[0081] In the embodiments of the present disclosure, unless otherwise specified, elements expressed in the singular, such as "a", "an", "the", "above", "said", "the", "the", etc., may mean "one and only one", or "one or more", "at least one", etc. For example, when using articles such as "a", "an", "the" in English in translation, the noun following the article may be understood as a singular expression or a plural expression.

[0082] In the embodiments of the present disclosure, “plurality” refers to two or more.

[0083] In some embodiments, the terms "at least one," "one or more," "a plurality of," "multiple," etc. may be used interchangeably.

[0084] In some embodiments, descriptions such as "at least one of A and B," "A and / or B," "in one case A, in another case B," and "in response to one case A, in response to another case B" may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); and in some embodiments, A and B (both A and B are executed). The same applies when there are more branches, such as A, B, and C.

[0085] In some embodiments, "A or B" and other descriptions may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed). The above is also applicable when there are more branches such as A, B, C, etc.

[0086] The prefixes such as "first" and "second" in the embodiments of the present disclosure are only used to distinguish different description objects and do not constitute any restriction on the position, order, priority, quantity or content of the description objects. For the statement of the description object, please refer to the description in the context of the claims or embodiments, and no unnecessary restriction should be constituted due to the use of prefixes. For example, if the description object is a "field", the ordinal number before the "field" in the "first field" and the "second field" does not limit the position or order between the "fields". "First" and "second" do not limit whether the "fields" they modify are in the same message, nor do they limit the order of the "first field" and the "second field". For another example, if the description object is a "level", the ordinal number before the "level" in the "first level" and the "second level" does not limit the priority between the "levels". For another example, the number of description objects is not limited by the ordinal number and can be one or more. Taking "first device" as an example, the number of "devices" can be one or more. In addition, the objects modified by different prefixes can be the same or different. For example, if the description object is "device", then the "first device" and the "second device" can be the same device or different devices, and their types can be the same or different; for example, if the description object is "information", then the "first information" and "the performance of each AI model" can be the same information or different information, and their contents can be the same or different.

[0087] In some embodiments, “including A,” “comprising A,” “used to indicate A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0088] In some embodiments, terms such as "in response to...", "in response to determining...", "in the case of...", "at the time of...", "when...", "if...", "if...", etc. can be used interchangeably.

[0089] In some embodiments, terms such as "greater than", "greater than or equal to", "not less than", "more than", "more than or equal to", "not less than", "higher than", "higher than or equal to", "not less than", and "above" can be replaced with each other, and terms such as "less than", "less than or equal to", "not greater than", "less than", "less than or equal to", "not more than", "lower than", "lower than or equal to", "not higher than", and "below" can be replaced with each other.

[0090] In some embodiments, devices and equipment can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. In some cases, they can also be understood as "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", "subject", etc.

[0091] In some embodiments, "network" can be interpreted as devices included in the network, such as access network equipment, core network equipment, etc.

[0092] In some embodiments, "access network device (AN device)" may also be referred to as "radio access network device (RAN device)", "base station (BS)", "radio base station", "fixed station", and in some embodiments may also be understood as "node", "access point", "transmission point (TP)", "reception point (RP)", "transmission and / or reception point (TRP)" "panel", "antenna panel", "antenna array", "cell", "macro cell", "small cell", "femto cell", "pico cell", "sector", "cell group", "serving cell", "carrier", "component carrier", "bandwidth part (BWP)", etc.

[0093] In some embodiments, "terminal" or "terminal device" may be referred to as "user equipment (UE)", "user terminal" "mobile station (MS)", "mobile terminal (MT)", subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, etc.

[0094] In some embodiments, obtaining data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

[0095] In some embodiments, data, information, etc. may be obtained with the user's consent.

[0096] In addition, each element, each row, or each column in the table of the embodiment of the present disclosure can be implemented as an independent embodiment, and the combination of any elements, any rows, and any columns can also be implemented as an independent embodiment.

[0097] FIG1A is a schematic diagram showing the architecture of a communication system according to an embodiment of the present disclosure.

[0098] As shown in FIG. 1A , a communication system 100 includes a terminal 101 and a network device 102 .

[0099] In some embodiments, the terminal 101 includes, for example, a mobile phone, a wearable device, an Internet of Things device, a car with communication function, a smart car, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, and at least one of a wireless terminal device in a smart home, but is not limited thereto.

[0100] In some embodiments, the network device 102 may be a single device including a first network element, a second network element, etc., or may be a plurality of devices or a group of devices, each including all or part of the first network element, the second network element, etc. The network element may be virtual or physical. The core network may include, for example, at least one of an evolved packet core (EPC), a 5G core network (5GCN), and a next generation core (NGC).

[0101] It can be understood that the communication system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution proposed in the embodiment of the present disclosure. Ordinary technicians in this field can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution proposed in the embodiment of the present disclosure is also applicable to similar technical problems.

[0102] The following embodiments of the present disclosure may be applied to the communication system 100 shown in FIG1A , or a portion thereof, but are not limited thereto. The entities shown in FIG1A are illustrative only. The communication system may include all or part of the entities shown in FIG1A , or may include other entities other than those shown in FIG1A . The number and form of the entities may be arbitrary, and the entities may be physical or virtual. The connection relationships between the entities are illustrative only. The entities may be connected or disconnected, and the connection may be in any manner, including direct or indirect, wired or wireless.

[0103] The embodiments of the present disclosure can be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 5G new radio (NR), future radio access (FRA), new radio access technology (RAT), new radio (NR), new radio access (NX), future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), Public Land Mobile Network (PLMN) networks, Device-to-Device (D2D) systems, Machine-to-Machine (M2M) systems, Internet of Things (IoT) systems, Vehicle-to-Everything (V2X), systems utilizing other communication methods, and next-generation systems based on and extending these methods. Furthermore, multiple systems may be combined (for example, a combination of LTE or LTE-A with 5G).

[0104] In NR systems, multi-point collaboration is a key technical approach to improve cell edge coverage and provide more balanced service quality within the service area. From a network perspective, deploying a large number of distributed access points with centralized baseband processing is more conducive to providing a balanced user experience rate and significantly reducing handover latency and signaling overhead. As frequency bands increase, a relatively denser deployment of access points is required to ensure network coverage. In high-frequency bands, with the increasing integration of active antenna equipment, modular active antenna arrays are becoming increasingly popular. Each TRP's antenna array can be divided into several relatively independent antenna panels, allowing the overall array configuration and port count to be flexibly adjusted based on deployment scenarios and service requirements. Antenna panels or TRPs can also be connected by optical fiber, enabling more flexible distributed deployment. In the millimeter wave band, as wavelengths decrease, the obstruction effect caused by obstacles such as people or vehicles becomes more significant. To ensure link robustness, collaboration between multiple TRPs or panels can be leveraged to transmit / receive from multiple beams at multiple angles, thereby mitigating the adverse effects of obstruction.

[0105] Based on the mapping of transmitted signal streams to multiple TRPs / panels, coordinated multi-point transmission technology can be categorized as coherent or incoherent. In coherent transmission, each data layer is mapped to multiple TRPs / panels using a weighted vector; in incoherent transmission, each data stream is mapped to only a subset of TRPs / panels. Coherent transmission places higher demands on synchronization between transmission points and the transmission capacity of the backhaul link, making it more sensitive to many non-ideal factors in real-world deployment conditions. In contrast, incoherent transmission is less susceptible to these factors and is therefore a key consideration for multi-point transmission technology. The uplink PUSCH (Physical Uplink Shared Channel) is transmitted in the TRP direction of multiple base stations. R17 proposes collaborative transmission under the TDM (Time-Division Multiplexing) transmission mode. Different repetitions of the same information on the PUSCH are sent to different TRPs of the base station through different transmission occasions (TO) in the time domain. This method has relatively low requirements on terminal capabilities. Each TO only needs to send PUSCH / PUCCH in the direction of one TRP. It does not require the ability to support simultaneous beam transmission, and the transmission delay is relatively large.

[0106] For the uplink, the spatial characteristics of the channels actually passed through by PUSCH channels facing different TRPs may be very different. Therefore, it is believed that the QCL-D (Quasi-Colocation) of PUSCH channels in different sending directions is different.

[0107] In R18, it is proposed to increase the reliability and throughput of transmission by realizing simultaneous collaborative transmission in the TRP direction of multiple base stations through multiple terminal panels (panels). At the same time, it can effectively reduce the transmission delay under multiple TRPs, but it requires the terminal to have the ability to send multiple beams simultaneously.

[0108] FIG1B is a schematic diagram of multi-PANEL / TRP transmission based on a single PDCCH scheduling, and FIG1C is a schematic diagram of multi-PANEL / TRP transmission based on different PDCCH scheduling.

[0109] As shown in Figure 1B, the transmission of PUSCH can be based on a single PDCCH (physical downlink control channel), that is, a multi-PANEL / TRP transmission scheduled by S-DCI (single DCI (downlink control information)). Specifically, the UE can interact with multiple TRPs (e.g., TRP1 and TRP) based on one or more data layers (One or more Layers) and multiple TPMIs (Transmitted Precoding Matrix Indicator) (e.g., TPMI1 and TPMI2) through multiple Panels (e.g., Panel1 and Panel2).

[0110] As shown in Figure 1C, PUSCH transmission can also be based on multiple panels / TRPs scheduled by different PDCCHs, namely M-DCI (multi-DCI). Specifically, the UE can interact with multiple panels and multiple TRPs. For example, the UE interacts with Panel 1 and TRP 1 based on PDCCH 1 and PUSCH 1, and the UE interacts with Panel 2 and TRP 2 based on PDCCH 2 and PUSCH 2.

[0111] In actual deployments, the links between transmission points may be relatively ideal backhaul links that support high throughput and very low backhaul latency, or they may be non-ideal backhaul links using methods such as xDSL, microwave, and relay. The M-DCI-based NC-JT transmission solution was introduced for non-ideal backhaul situations, but this solution can also be used in ideal backhaul situations.

[0112] The terminal can be configured with multiple physical panels, and the capabilities of different panels can be different. For example, different panels have different numbers of SRS (sounding reference signal) ports and support different maximum numbers of data transmission layers. For example, one panel supports a maximum of 2 layers of transmission, and another panel supports a maximum of 4 layers of transmission. The network device will determine whether the terminal is currently suitable for simultaneous uplink transmission of multiple panels. If the terminal is currently suitable for simultaneous uplink transmission of multiple panels, the network device will directly or indirectly indicate the relevant transmission parameters, including the terminal's specific beam indication information, the number of data layers used for transmission, the allocation of DMRS (Demodulation Reference Signal) ports used, and precoding indication information.

[0113] The transmission schemes supported by uplink simultaneous transmission STxMP (Simultaneous transmission via multi-panel) for S-DCI-based PUSCH may include: SDM (Space Division Multiplexing) space division multiplexing scheme and SFN (Single Frequency Network) space division multiplexing scheme.

[0114] FIG1D is a schematic diagram of transmission based on the SDM space division multiplexing scheme, and FIG1E is a schematic diagram of transmission based on the SDM space division multiplexing scheme.

[0115] As shown in Figure 1D, the SDM spatial division multiplexing scheme is: different parts of a TB (Transmission Block) of PUSCH are sent to two different TRPs on the same time-frequency resources through their corresponding DMRS ports or port combinations allocated on different panels. Different panels / TRPs / transmission opportunities (TOs) are associated with different TCI (Transmission Configuration Indicator) states, that is, beams.

[0116] As shown in Figure 1E, the SFN spatial division multiplexing scheme is as follows: one TB of the PUSCH is transmitted on the same time-frequency resources to two different TRPs through the same DMRS port or port combination allocated on different panels. Different panels / TRPs / transmission opportunities (TOs) are associated with different TCI states, that is, beams.

[0117] The following describes the TCI status.

[0118] Downlink beam indication can be accomplished by indicating the TCI state to the user. A downlink reference signal is associated with the TCI state, and the user will use the same receiving beam as the reference signal to receive data or control information. The beams of each uplink channel or signal are achieved by indicating spatial relationship information (Spatial Ration information) or SRI to the UE. The user uses the same beam as the reference signal associated with the spatial information or the SRS corresponding to the SRI to send uplink data. Due to the differences in uplink and downlink beam management mechanisms, different parameter information needs to be configured for uplink and downlink beam management, such as the TCI state of the downlink beam indication and the spatial relationship information of the uplink beam indication. The unified TCI framework is designed for uplink beam management and downlink beam management, which can reduce signaling overhead and increase the flexibility of beam management.

[0119] In the unified TCI framework for uplink and downlink, two mechanisms, joint DL / UL beam indication and separate DL / UL beam indication, are available for beam indication. Because FR2 (high frequency band) terminals must support beam correspondence, and generally, the optimal downlink receive beam is also the optimal uplink transmit beam, joint beam indication can be used to indicate a joint TCI state to the user. The associated reference signal indicating QCL Type D information is used to determine both the downlink and uplink transmit beams. However, there are special cases where the optimal downlink beam cannot be considered equal. In the unified TCI framework for uplink and downlink, two mechanisms, joint DL / UL beam indication and separate DL / UL beam indication, are designed for beam indication. These mechanisms are similar to those for uplink transmit beams, such as when MPE or network flexibility is a consideration. In these cases, separate beam indication is used to indicate the downlink and uplink transmit beams to the user, respectively.

[0120] Taking into account the flexibility and complexity of beam information configuration and indication, NR has designed a multi-layer beam indication method, which can be used in the Unified TCI state, that is, indication through RRC (Radio Resource Control) + MAC-CE (Media Access Control-Control Element) + DCI (Downlink Control Information).

[0121] The RRC configuration / reconfiguration reference signal index set constitutes an optional TCI state resource pool used to describe beam characteristics. For uplink data channels, the maximum number of supported TCI states is 64, and for downlink data channels, the maximum number of supported TCI states is 128.

[0122] Among them, MAC-CE signaling is used to activate / deactivate the TCI state, and the activated reference signal index will be dynamically combined and configured into the associated TCI or reference signal set.

[0123] A TCI status indication field in the DL DCI signaling is used to indicate a TCI status code point, and a maximum of eight TCI status code points can be selected.

[0124] In the Unified TCI state, the downlink TCI state or joint TCI state indicated for the UE is used to determine the downlink transmission beam, and the indicated uplink TCI state or joint TCI state is used to determine the uplink beam. Here, the downlink beam refers to the user-specific PDSCH and the beam of all / part of the PDCCH in a CC. The uplink beam refers to the uplink transmit spatial filter of the PUSCH based on dynamic grant / configurable grant and all or part of the dedicated PUCCH resources of a CC.

[0125] A single TCI state pool can be used for both the downlink TCI state and the joint TCI state in independent beam indication. For joint beam indication, the TCI field only needs to indicate a single joint TCI state, which is used to determine both the uplink and downlink transmission beams. However, with independent beam indication, the downlink and uplink transmission beams are no longer identical and require separate indications. Furthermore, there are three scenarios: requiring simultaneous indication of downlink and uplink transmission beams for a user, requiring indication of only the downlink transmission beam, or requiring indication of only the uplink transmission beam.

[0126] To this end, in the case of independent beam indication, the mapping relationship between the TCI field and TCI status in DCI formats 1_1 / 1_2 is as follows:

[0127] One code point in the TCI field can correspond to both a downlink TCI state and an uplink TCI state;

[0128] One code point in the TCI field corresponds to only one downlink TCI state. In this case, the user maintains the current UL TCI state.

[0129] One code point in the TCI field corresponds to only one uplink TCI state. At this time, the user maintains the current DL TCI state unchanged.

[0130] To improve the reliability of DCI beam indication, a HARQ-ACK feedback mechanism can be designed for DCI. When using DCI format 1_1 / 1_2 with downlink scheduling information for beam indication, the ACK / NACK feedback information on whether the beam indication information is successfully decoded will be included in the ACK / NACK feedback of the scheduled PDSCH.

[0131] When using DCI format 1_1 / 1_2 without downlink scheduling information for beam indication, in order to simplify the design of the feedback mechanism, the ACK / NACK feedback mechanism during the release of SPS (Semi-Persistent Scheduling) PDSCH can be multiplexed, and both Type 1 and Type 2 HARQ (Hybrid Automatic Repeat reQuest)-ACK codebooks can be supported to inform the base station whether the beam indication information is successfully decoded. To this end, it is required that the CRC of DCI format 1_1 / 1_2 without scheduling information also needs to be scrambled with CS-RNTI during beam indication. In addition, in order to distinguish whether the DCI is used for beam indication or SPS PDSCH release, it is stipulated that when used for beam indication, some fields of the DCI are configured as follows, as shown in Table 1.

[0132] Table 1 Beam indication DCI field configuration method

[0133] FIG1F is a schematic diagram of MAC CE signaling for unified TCI state activation / deactivation.

[0134] As shown in Figure 1F, the unified TCI state activation / deactivation MAC CE is identified by a MAC subheader with an eLCID. It is of variable size and consists of the following fields:

[0135] Serving Cell ID: This field indicates the identity of the serving cell to which the MAC CE applies. The length of this field is 5 bits. If the indicated serving cell is configured as part of simultaneousU-TCI-UpdateList1, simultaneousU-TCI-UpdateList2, simultaneousU-TCI-UpdateList3, or simultaneousU-TCI-UpdateList4 as indicated in TS 38.331, this MAC CE applies to all serving cells in the set simultaneousU-TCI-UpdateList1, simultaneousU-TCI-UpdateList2, simultaneousU-TCI-UpdateList3, or simultaneousU-TCI-UpdateList4, respectively.

[0136] DL BWP ID: This field indicates that the MAC CE is applicable to the DL BWP as the code point of the DCI bandwidth part indication field specified in TS 38.212; the length of the BWP ID field is 2 bits;

[0137] UL BWP ID: This field indicates that the MAC CE is applicable to the UL BWP as the code point of the DCI bandwidth part indication field specified in TS 38.212. If the value of unifiedTCI-StateTvpe in the serving cell indicated by the serving cell ID is joint, this field is considered to be reserved. The BWP ID field length is 2 bits;

[0138] P i :This field indicates whether each TCI code point is in multiple TCI states or single TCI state. If P i The field is set to 1, indicating that the i-th TCI code point includes DL TCI state and UL TCI state; if P i If the field is set to 0, it means that the i-th TCI code point contains only DL / joint TCI state or UL TCI state; the code point to which the TCI state is mapped is determined by its ordinal position in all TCI state ID fields;

[0139] D / U: This field indicates whether the TCI status ID of the same byte is joint / DL or ULTCI status; if this field is set to 1, the TCI status ID in the same byte is joint / DL; if this field is set to 0, it indicates that the TCI status ID in the same byte is UL;

[0140] TCI state ID: TCI state identifier, identified by TCI-StateId in TS 38.331; if D / U is set to 1, the 7-bit TCI state ID is used, that is, TCI-StateId specified in TS 38.331; if D / U is set to 0, the highest bit of the TCI state ID is considered reserved, and the remaining 6 bits represent TCI-UL-State-Id specified in TS 38.331; a maximum of 16 TCI states can be activated;

[0141] R: Reserved bit, set to 0.

[0142] Among them, Oct represents byte.

[0143] FIG1G is a schematic diagram of MAC CE signaling for joint / independent TCI state activation / deactivation in an MTRP scenario.

[0144] As shown in Figure 1G , the enhanced unified TCI state activation / deactivation MAC CE for the joint TCI state is identified by a MAC subheader with an eLCID. It is of variable size and consists of the following fields:

[0145] Serving Cell ID: This field indicates the identity of the serving cell to which the MAC CE applies. The length of this field is 5 bits. If the indicated serving cell is configured as part of simultaneousU-TCI-UpdateList1, simultaneousU-TCI-UpdateList2, simultaneousU-TCI-UpdateList3 or simultaneousU-TCI-UpdateList4 indicated in TS 38.331, this MAC CE applies to all serving cells in the set simultaneousU-TCI-UpdateList1, simultaneousU-TCI-UpdateList2, simultaneousU-TCI-UpdateList3 or simultaneousU-TCI-UpdateList4 respectively;

[0146] DL BWP ID: This field indicates that the MAC CE is applicable to the DL BWP as the code point of the DCI bandwidth part indication field specified in TS 38.212; the length of the BWP ID field is 2 bits;

[0147] F i,j : This field indicates whether the TCI State ID field associated with code point i of the DCI Transmission Configuration Indication field has the jth joint TCI state, where j = 1, 2; if F i,jThe field is set to 1, indicating that there is a j-th joint TCI state for code point i; if F i,j If the field is set to 0, it indicates that the jth joint TCI state of code point i is missing; the code point to which the TCI state is mapped is determined by its ordinal position in all TCI state ID fields;

[0148] TCI state ID: This field indicates the 7-bit TCI state ID, which is identified by TCI-StateId in TS 38.331. There are a maximum of 16 active TCI states.

[0149] R: Reserved bit, set to 0.

[0150] FIG1H is a schematic diagram of MAC CE signaling for independent TCI state activation / deactivation.

[0151] As shown in Figure 1H, the enhanced unified TCI state activation / deactivation MAC CE for independent TCI states is identified by a MAC subheader with an eLCID. It is of variable size and consists of the following fields:

[0152] Serving Cell ID: This field indicates the identity of the serving cell to which the MAC CE applies. The length of this field is 5 bits. If the indicated serving cell is configured as part of simultaneousU-TCI-UpdateList1, simultaneousU-TCI-UpdateList2, simultaneousU-TCI-UpdateList3 or simultaneousU-TCI-UpdateList4 indicated in TS 38.331, this MAC CE applies to all serving cells in the set simultaneousU-TCI-UpdateList1, simultaneousU-TCI-UpdateList2, simultaneousU-TCI-UpdateList3 or simultaneousU-TCI-UpdateList4 respectively;

[0153] DL BWP ID: This field indicates that the MAC CE is applicable to the DL BWP as the code point of the DCI bandwidth part indication field specified in TS 38.212; the length of the BWP ID field is 2 bits;

[0154] UL BWP ID: This field indicates that the MAC CE is applicable to the UL BWP as the code point of the DCI bandwidth part indication field specified in TS 38.212. The BWP ID field length is 2 bits;

[0155] F i,j: This field indicates whether the TCI State ID field associated with code point i of the DCI Transmission Configuration Indication field has the jth downlink TCI state, where j = 1, 2; if F i,j If the field is set to 1, it indicates that there is a j-th downlink TCI state for code point i; if F i,j If the field is set to 0, it means that the jth downlink TCI status of code point i is missing;

[0156] S i,j : This field indicates whether the TCI State ID field associated with code point i of the DCI Transmission Configuration Indication field has the jth uplink TCI state, where j = 1, 2; if S i,j If the field is set to 1, it indicates that there is a j-th uplink TCI state for code point i; if S i,j If the field is set to 0, it means that the jth uplink TCI status of code point i is missing;

[0157] TCI state ID: TCI state identifier, identified by TCI-StateId in TS 38.331; if the indicated TCI state ID is DL TCI state, the length of TCI state ID is 7 bits, that is, it is used in accordance with TCI-StateId specified in TS38.331; if the indicated TCI state ID is UL TCI state, the highest bit of TCI state ID is reserved, and the remaining 6 bits represent TCI-UL-State-Id specified in TS 38.331; TCI state ID is in accordance with F i,j and S i,j The fields are arranged in the indicated order, and the maximum number of activated TCI states is 32;

[0158] R: Reserved bit, set to 0.

[0159] In a multi-TRP deployment scenario with downlink STRP / uplink MTRP, deploying multiple uplink reception points (RTRPs) reduces network deployment costs, improves uplink coverage and throughput, and avoids complex network planning and downlink interference management coordination issues. Asymmetric multi-TRP transmission (single downlink TRP / multiple uplink TRPs) is implemented in heterogeneous networks to improve UL coverage and throughput. Because the macro gNB and micro node UL TRPs have different power ratings, UEs can receive DL transmissions from the macro gNB but route UL transmissions to the macro gNB or non-co-located micro node UL TRPs to maximize UL throughput. As an option to further reduce energy consumption, micro nodes can reduce or even disable DL transmissions. Unlike small cells, they can be used solely for uplink reception.

[0160] FIG. 1I is a schematic diagram of the cell node functions in a macro cell, and FIG. 1J is a schematic diagram of the cell node functions in a communication scenario with multiple uplink receiving points.

[0161] As shown in Figure 1I, in a macro cell, the UE performs uplink and downlink transmissions with the base station. The base station is used for both sending and receiving downlink data. As shown in Figure 1J, in a communication scenario with multiple uplink receiving points, the base station sends downlink data to the UE, and the UE can transmit the uplink data to a UL receiver point (uplink receiving node), which is used only for receiving uplink data.

[0162] Figure 1K is a schematic diagram of a communication scenario with single downlink TRP transmission and multiple uplink TRP transmission.

[0163] As shown in Figure 1K, the gNB is used to send downlink data to multiple UEs and receive uplink data sent by the UEs. The UL-TRP is only used to receive uplink data sent by the UE. The gNB and the UL Rx Node can be connected by a backhaul link, which can be an ideal backhaul situation.

[0164] The communication scenario shown in Figure 1K is referred to as a UL-only scenario. In this UL-only scenario, the cell includes a master gNB and multiple UL Transmitter Reception Points (TRPs). For a terminal to perform downlink STRP / MTRP transmission, the network equipment must perform uplink / downlink beam management and ultimately indicate the beam information used for data / signal transmission to the terminal via the existing RRC+MAC-CE+DCI configuration method. Uplink MTRP transmission can be coordinated between the master gNB and the UL TRP, or between different UL TRPs.

[0165] In the transmission scenario of downlink STRP / uplink MTRP transmission, the corresponding UL (uplink) transmission scheme can be:

[0166] For uplink STRP transmission: you can select macro gNB, or you can select a specific UL TRP;

[0167] For uplink MTRP transmission, you can select macro gNB and one UL TRP, or select two UL TRPs, or select macro gNB and two of the UL TRPs.

[0168] It needs to be clarified how the beam used for M-TRP transmission is configured and indicated in the UL-only scenario.

[0169] Based on this, an embodiment of the present disclosure provides a beam indication method. Through the method provided by the embodiment of the present disclosure, the method for indicating the beam used for M-TRP transmission in the UL-only scenario can be clarified.

[0170] FIG2 is a schematic diagram illustrating an interaction of a beam indication method according to an embodiment of the present disclosure. As shown in FIG2 , the present disclosure embodiment relates to a communication method for a communication system 100, the method comprising:

[0171] In step S2101 , the network device 102 sends instruction information to the terminal 101 .

[0172] In some embodiments, the terminal 101 receives indication information sent by the network device 102 .

[0173] In some embodiments, the indication information is carried in a Media Access Control Control Element (MAC CE).

[0174] In some embodiments, the indication information is used to indicate the TCI state code point (codepoint) in the Transmission Configuration Indicator State (TCI State) code point pool, and the TCI state code point is used for the downlink single transmission node (S-TRP) and the uplink multi-transmission reception point (M-TRP), wherein the indication information is the TCI information indication field in the downlink control information (DCI), and different code points in the TCI state code point pool correspond to one or more TCI states, and multiple TCI states correspond to multiple transmission node TRPs. Multiple TRPs are used for the terminal 101 to perform downlink transmission and / or uplink transmission, and include a TRP dedicated to uplink transmission, and different TRPs are configured with different SRS resource sets for beam management.

[0175] It is understood that the network device 102 indicates the TCI status code point in the TCI status code point pool through the indication information sent to the terminal 101. Since the TCI status code point in the TCI status pool can be used to indicate one or more TCI states, the indication information indicates the TCI state in the scenario, thereby enabling the configuration and indication of the beam used for MTRP transmission through the TCI status code point.

[0176] For example, the indication information includes the TCI information indication field in the DCI. Alternatively, the indication information may be used to indicate the TCI information indication field in the DCI. Alternatively, the indication information may include other information, and the other information may be used to indicate the TCI information indication field in the DCI.

[0177] In some embodiments, the bit width of the TCI information indication field corresponds to the number of TCI status code points, including, for example, that the wider the bit width of the TCI information indication field, the more TCI status code points the TCI information indication field can indicate.

[0178] In some embodiments, different TCI state code points correspond to one or more of the following TCI state types: joint TCI state (joint Transmission Configuration Indicator State, joint TCI State), uplink TCI state, and downlink TCI state.

[0179] Optionally, the uplink TCI state corresponds to an independently configured TCI state codepoint pool, and the downlink TCI state and the joint TCI state correspond to the same TCI state codepoint pool. It should be noted that the independently configured TCI state codepoint pool and the same TCI state codepoint pool are configured through radio resource control (RRC) signaling.

[0180] Based on this, the indication of the TCI status can be achieved by indicating different TCI status code points through indication information.

[0181] For the multiple TCI states indicated, the corresponding multiple TRP transmissions include, for example: multiple TCI states corresponding to multiple TRP transmissions based on single downlink control information (Single Downlink control information, S-DCI), or multiple TCI states corresponding to multiple TRP transmissions based on multiple downlink control information (Multi Downlink control information, M-DCI).

[0182] Based on the description above, it can be understood that the indication information indicates the TCI state applicable to the communication scenario (including, for example, communication scenarios for downlink S-TRP and uplink M-TRP) by indicating the TCI code point in the TCI state code point pool. It is understandable that in different communication scenarios (or based on different communication transmission purposes), in order to ensure communication transmission performance, different TCI state indication modes will be used to indicate the TCI state. The TCI state indication mode can be understood as a combination type of different TCI states.

[0183] In some embodiments, the TCI status indication mode is based on the TCI status code point configuration. The TCI status indication mode includes, for example, a hybrid TCI status indication mode, a joint TCI status indication mode, and an independent TCI status indication mode.

[0184] In some embodiments, when the TCI status code point is configured as a hybrid TCI status indication mode or a joint TCI status indication mode, the indication information is used to indicate: a joint TCI status and an uplink TCI status.

[0185] That is, the indication information corresponds to the mixed TCI state indication mode or the joint TCI state indication mode by indicating that the combination of the TCI states is the joint TCI state and the uplink TCI state.

[0186] In the joint TCI state indication mode or the mixed TCI state indication mode, the indication information is used to indicate 1 joint TCI state and N uplink TCI states, where N is an integer less than or equal to 2.

[0187] It should be noted that N is determined based on the number of multiple cooperative TRPs corresponding to the terminal (for example, N is the maximum number of multiple cooperative TRPs that the terminal can correspond to). For different values ​​of N, the number of cooperative nodes that the corresponding terminal 101 can support is different.

[0188] For example, when N is 0, the number of coordinated TRPs that UE 101 can support is 0. In this case, due to the presence of the master gNB, the communication scenario corresponding to UE 101 includes both UE 101 and the master gNB. In other words, when N is 0, UE 101 supports communication in the S-TRP communication scenario. UE 101 only supports dynamic point selection (DPS).

[0189] For another example, when N is 1, the number of coordinated TRPs that terminal 101 can support is 1. In this case, due to the presence of the master gNB, the communication scenario corresponding to terminal 101 includes terminal 101, the master gNB, and one coordinated TRP. In other words, when N is 1, terminal 101 supports communication in a communication scenario with an M-TRP that includes one coordinated TRP.

[0190] For another example, when N is 2, the number of coordinated TRPs that UE 101 can support is 2. In this case, due to the presence of the master gNB, the communication scenario corresponding to UE 101 includes UE 101, the master gNB, and two coordinated TRPs. In other words, when N is 2, UE 101 supports communication in a communication scenario with an M-TRP that includes two coordinated TRPs.

[0191] In some embodiments, when the TCI status code point is configured as an independent TCI status indication mode, the indication information is used to indicate the uplink TCI status and the downlink TCI status.

[0192] That is, the indication information corresponds to the independent TCI state indication mode by indicating that the combination of TCI states is a downlink TCI state and an uplink TCI state.

[0193] Based on this, the TCI state in the communication scenarios of downlink S-TRP and uplink MTRP can be configured. Beam management can then be performed based on the configured TCI state.

[0194] In some embodiments, terms such as "TCI status code point" and "TCI code point" can be used interchangeably.

[0195] In some embodiments, the names of information, etc. are not limited to the names described in the embodiments, and terms such as "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "domain", "field", "symbol", "symbol", "codeword", "codebook", "codeword", "codepoint", "bit", "data", "program", and "chip" can be used interchangeably.

[0196] In some embodiments, the terms "codebook," "codeword," and "precoding matrix" may be used interchangeably. For example, a codebook may be a collection of one or more codewords / precoding matrices.

[0197] In some embodiments, terms such as "uplink", "uplink", "physical uplink" can be interchangeable with each other, and terms such as "downlink", "downlink", "physical downlink" can be interchangeable with each other, and terms such as "side", "sidelink", "side communication", "sidelink communication", "direct connection", "direct link", "direct communication", "direct link communication" can be interchangeable with each other.

[0198] In some embodiments, the terms "downlink control information (DCI)", "downlink (DL) assignment", "DL DCI", "uplink (UL) grant", "UL DCI" and the like may be used interchangeably.

[0199] In some embodiments, terms such as "physical downlink shared channel (PDSCH)" and "DL data" can be used interchangeably, and terms such as "physical uplink shared channel (PUSCH)" and "UL data" can be used interchangeably.

[0200] In some embodiments, the terms "radio", "wireless", "radio access network (RAN)", "access network (AN)", "RAN-based" and the like may be used interchangeably.

[0201] In some embodiments, the terms "search space", "search space set", "search space configuration", "search space set configuration", "control resource set (CORESET)", "CORESET configuration" and the like may be used interchangeably.

[0202] In some embodiments, terms such as "resource block (RB)", "physical resource block (PRB)", "sub-carrier group (SCG)", "resource element group (REG)", "PRB pair", "RB pair", "resource element (RE)", and "sub-carrier" can be used interchangeably.

[0203] In some embodiments, "obtain", "get", "get", "receive", "transmit", "bidirectional transmission", "send and / or receive" can be interchangeable, and can be interpreted as receiving from other entities, obtaining from protocols, obtaining from higher layers, obtaining by self-processing, autonomous implementation, etc.

[0204] In some embodiments, terms such as "send", "transmit", "report", "download", "transmit", "bidirectional transmission", "send and / or receive" can be used interchangeably.

[0205] In some embodiments, terms such as "certain", "preset", "preset", "setting", "indicated", "a certain", "any", and "first" can be interchangeable. "Specific A", "preset A", "preset A", "setting A", "indicated A", "a certain A", "any A", and "first A" can be interpreted as A pre-specified in a protocol, etc., or as A obtained through setting, configuration, or indication, etc., or as specific A, a certain A, any A, or first A, etc., but not limited to this.

[0206] FIG3 is a flow chart of a beam indication method according to an embodiment of the present disclosure. As shown in FIG3A , an embodiment of the present disclosure relates to a beam indication method, which includes:

[0207] Step S3101, receiving instruction information.

[0208] The optional implementation of step S3101 can refer to the optional implementation of step S2101 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0209] In some embodiments, the terminal 101 receives indication information sent by the access network device 102, but is not limited thereto and may also receive indication information sent by other entities.

[0210] In some embodiments, the terminal 101 obtains indication information specified by the protocol.

[0211] In some embodiments, the terminal 101 obtains the indication information from upper layer(s).

[0212] In some embodiments, terminal 101 performs processing to obtain configuration information.

[0213] In some embodiments, step S3101 is omitted, and the terminal 101 autonomously implements the function indicated by the indication information, or the above function is default or acquiescent.

[0214] In some embodiments, the indication information is used to indicate the TCI status code point in the TCI status code point pool, and the TCI status code point is used in the communication scenarios of a single downlink transmission node and multiple uplink transmission nodes; wherein the indication information is the TCI information indication field in the DCI, and different code points in the TCI status code point pool correspond to one or more TCI states, and multiple TCI states correspond to multiple transmission nodes, multiple of which are used for terminals to perform downlink transmission and / or uplink transmission, and include different SRS resource sets dedicated to uplink transmission, and different configurations have the function of beam management.

[0215] In some embodiments, when the TCI status code point is configured as a hybrid TCI status indication mode or a joint TCI status indication mode, the indication information is used to indicate: a joint TCI status and an uplink TCI status.

[0216] In some embodiments, when the TCI status code point is configured as an independent TCI status indication mode, the indication information is used to indicate the uplink TCI status and the downlink TCI status.

[0217] In some embodiments, the indication information is used to indicate 1 joint TCI state and N uplink TCI states, where N is an integer less than or equal to 2.

[0218] In some embodiments, the bit width of the TCI information indication field corresponds to the number of TCI status code points.

[0219] In some embodiments, N is determined based on the number of multiple collaborative TRPs corresponding to the terminal, and the number of multiple collaborative TRPs corresponding to the terminal is determined based on the capability of the terminal; wherein, when N is 0, the terminal corresponds to S-TRP transmission; when N is 1 or 2, the terminal corresponds to M-TRP transmission.

[0220] In some embodiments, different TCI state code points correspond to one or more of the following TCI state types: joint TCI state; uplink TCI state; downlink TCI state; uplink TCI state corresponds to an independently configured TCI state code point pool, downlink TCI state and joint TCI state correspond to the same TCI state code point pool, and the independently configured TCI state code point pool and the same TCI state code point pool are configured respectively through RRC signaling.

[0221] In some embodiments, multiple TCI states correspond to the transmission of multiple TRPs, including: multiple TCI states correspond to the transmission of multiple TRPs based on a single downlink control information, or multiple TCI states correspond to the transmission of multiple TRPs based on multiple downlink control information.

[0222] In some embodiments, the indication information is carried in a MAC CE.

[0223] FIG4 is a flow chart of a beam indication method according to an embodiment of the present disclosure. As shown in FIG4 , the embodiment of the present disclosure relates to a beam indication method, which includes:

[0224] Step S4101, sending instruction information.

[0225] In some embodiments, the indication information is used to indicate the TCI status code point in the TCI status code point pool, and the TCI status code point is used in the communication scenarios of a single downlink transmission node and multiple uplink transmission nodes; wherein the indication information is the TCI information indication field in the DCI, and different code points in the TCI status code point pool correspond to one or more TCI states, and multiple TCI states correspond to multiple transmission nodes, multiple of which are used for terminals to perform downlink transmission and / or uplink transmission, and include different SRS resource sets dedicated to uplink transmission, and different configurations have the function of beam management.

[0226] In some embodiments, when the TCI status code point is configured as a hybrid TCI status indication mode or a joint TCI status indication mode, the indication information is used to indicate: a joint TCI status and an uplink TCI status.

[0227] In some embodiments, when the TCI status code point is configured as an independent TCI status indication mode, the indication information is used to indicate the uplink TCI status and the downlink TCI status.

[0228] In some embodiments, the indication information is used to indicate 1 joint TCI state and N uplink TCI states, where N is an integer less than or equal to 2.

[0229] In some embodiments, the bit width of the TCI information indication field corresponds to the number of TCI status code points.

[0230] In some embodiments, N is determined based on the number of multiple collaborative TRPs corresponding to the terminal, and the number of multiple collaborative TRPs corresponding to the terminal is determined based on the capability of the terminal; wherein, when N is 0, the terminal corresponds to S-TRP transmission; when N is 1 or 2, the terminal corresponds to M-TRP transmission.

[0231] In some embodiments, different TCI state code points correspond to one or more of the following TCI state types: joint TCI state; uplink TCI state; downlink TCI state; uplink TCI state corresponds to an independently configured TCI state code point pool, downlink TCI state and joint TCI state correspond to the same TCI state code point pool, and the independently configured TCI state code point pool and the same TCI state code point pool are configured respectively through RRC signaling.

[0232] In some embodiments, multiple TCI states correspond to the transmission of multiple TRPs, including: multiple TCI states correspond to the transmission of multiple TRPs based on a single downlink control information, or multiple TCI states correspond to the transmission of multiple TRPs based on multiple downlink control information.

[0233] In some embodiments, the indication information is carried in a MAC CE.

[0234] In some embodiments, the above method may also include the methods described in the above embodiments such as the communication system side, the terminal side, and the network device side, which will not be repeated here.

[0235] In some embodiments, the embodiments of the present disclosure also propose a beam indication method for solving the uplink and downlink unified TCI state configuration and indication method in the UL-only scenario, so as to obtain beam information that can be used for terminal transmission.

[0236] In some embodiments, the method includes: measuring an uplink beam.

[0237] For example, the network device configures one or more SRS resource sets with a "beam management" function. Different SRS resource sets are configured for different uplink reception points, and each set contains one or more SRS resources. The SRS resources can be used for beam measurement.

[0238] In some embodiments, the method includes configuring a beam pool.

[0239] Exemplarily, configuration is performed based on RRC. For example, a TCI state pool (or TCI state code point pool) is configured for both the downlink TCI state and the combined TCI state. A separate TCI state pool (or TCI state code point pool) is configured for the uplink TCI state. The TCI state pool corresponding to the uplink TCI state is different from the TCI state pool configured for both the downlink TCI state and the combined TCI state, and the two are configured based on different RRC signaling.

[0240] Based on the MAC CE, a TCI state pool containing downlink TCI states, combined TCI states, and uplink TCI states is activated. Optionally, the number of codepoints activated by the MAC CE can be expanded based on the number of combinations in the state pool. For example, the number of activated codepoints can be controlled by the number of bits in the corresponding DCI indicator field.

[0241] In some embodiments, the method includes indicating a downlink TCI status and an uplink TCI status.

[0242] In some embodiments, a hybrid indication mode may be used for TCI status indication. This hybrid indication mode includes indicating both the joint TCI status and the uplink TCI status. In this indication mode, a TCI status codepoint includes one joint TCI status and possibly N uplink TCI statuses.

[0243] Optionally, the value of N can be at least one of 0, 1, and 2. The value of N identifies the maximum number of cooperative transmission nodes that a terminal can support, and the maximum number of cooperative transmission nodes that a terminal can support is determined based on the terminal's capabilities. When the value of N is 0, the terminal only supports dynamic node selection. When the value of N is 1 or 2, the terminal supports M-TRP transmission.

[0244] In some embodiments, multiple TCI states correspond to the transmission of multiple TRPs, including: multiple TCI states correspond to the transmission of multiple TRPs based on a single downlink control information, or multiple TCI states correspond to the transmission of multiple TRPs based on multiple downlink control information.

[0245] In the embodiments of the present disclosure, some or all of the steps and their optional implementations may be arbitrarily combined with some or all of the steps in other embodiments, or may be arbitrarily combined with the optional implementations of other embodiments.

[0246] The embodiments of the present disclosure further provide an apparatus for implementing any of the above methods. For example, an apparatus is provided, comprising units or modules for implementing each step performed by a terminal in any of the above methods. For another example, another apparatus is provided, comprising units or modules for implementing each step performed by a network device (e.g., an access network device, a core network function node, a core network device, etc.) in any of the above methods.

[0247] It should be understood that the division of the various units or modules in the above device is merely a division of logical functions. In actual implementation, they may be fully or partially integrated into a physical entity, or they may be physically separated. In addition, the units or modules in the device may be implemented in the form of a processor calling software: for example, the device includes a processor, the processor is connected to a memory, and the memory stores instructions. The processor calls the instructions stored in the memory to implement any of the above methods or implement the functions of the various units or modules of the above device, wherein the processor is, for example, a general-purpose processor, such as a central processing unit (CPU) or a microprocessor, and the memory is a memory within the device or a memory outside the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits, and the functions of some or all of the units or modules can be realized by designing the hardware circuits. The above-mentioned hardware circuits can be understood as one or more processors; for example, in one implementation, the above-mentioned hardware circuit is an application-specific integrated circuit (ASIC), which realizes the functions of some or all of the above units or modules by designing the logical relationship of the components in the circuit; for example, in another implementation, the above-mentioned hardware circuit can be realized by a programmable logic device (PLD). Taking a field programmable gate array (FPGA) as an example, it can include a large number of logic gate circuits, and the connection relationship between the logic gate circuits is configured by configuring the configuration file, thereby realizing the functions of some or all of the above units or modules. All units or modules of the above devices can be realized in the form of software called by the processor, or in the form of hardware circuits, or in part by the form of software called by the processor, and the rest by hardware circuits.

[0248] In the embodiments of the present disclosure, the processor is a circuit with signal processing capabilities. In one implementation, the processor can be a circuit with instruction reading and execution capabilities, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a digital signal processor (DSP). In another implementation, the processor can implement certain functions through the logical relationship of the hardware circuit. The logical relationship of the above-mentioned hardware circuit is fixed or reconfigurable. For example, the processor is a hardware circuit implemented by an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document and implementing the hardware circuit configuration can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. In addition, it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a neural network processing unit (NPU), a tensor processing unit (TPU), a deep learning processing unit (DPU), etc.

[0249] Figure 5A is a structural diagram of the terminal proposed in an embodiment of the present disclosure. As shown in Figure 5A, the terminal 5100 may include: a transceiver module 5101 for receiving indication information, the indication information is used to indicate the TCI status code point in the TCI status code point pool, and the TCI status code point is used in the communication scenario of a downlink single transmission node and an uplink multiple transmission node; wherein the indication information is the TCI information indication field in the downlink control information, and different code points in the TCI status code point pool correspond to one or more TCI states, and multiple TCI states correspond to multiple transmission nodes. Multiple TRPs are used for the terminal to perform downlink transmission and / or uplink transmission, and include a TRP dedicated to uplink transmission, and different TRPs are configured with different SRS resource sets with the function of beam management. Optionally, the above-mentioned transceiver module 5101 is used to perform at least one of the communication steps such as sending and / or receiving performed by the terminal 101 in any of the above methods (for example, step S2101, but not limited thereto), which will not be repeated here.

[0250] In some embodiments, the transceiver module may include a transmitting module and / or a receiving module, and the transmitting module and the receiving module may be separate or integrated. Optionally, the transceiver module may be interchangeable with the transceiver.

[0251] In some embodiments, when the TCI status code point is configured as a hybrid TCI status indication mode or a joint TCI status indication mode, the indication information is used to indicate: a joint TCI status and an uplink TCI status.

[0252] In some embodiments, when the TCI status code point is configured as an independent TCI status indication mode, the indication information is used to indicate the uplink TCI status and the downlink TCI status.

[0253] In some embodiments, the indication information is used to indicate 1 joint TCI state and N uplink TCI states, where N is an integer less than or equal to 2.

[0254] In some embodiments, the bit width of the TCI information indication field corresponds to the number of TCI status code points.

[0255] In some embodiments, N is determined based on the number of multiple collaborative TRPs corresponding to the terminal, and the number of multiple collaborative TRPs corresponding to the terminal is determined based on the capability of the terminal; wherein, when N is 0, the terminal corresponds to S-TRP transmission; when N is 1 or 2, the terminal corresponds to M-TRP transmission.

[0256] In some embodiments, different TCI state code points correspond to one or more of the following TCI state types: joint TCI state; uplink TCI state; downlink TCI state; uplink TCI state corresponds to an independently configured TCI state code point pool, downlink TCI state and joint TCI state correspond to the same TCI state code point pool, and the independently configured TCI state code point pool and the same TCI state code point pool are configured respectively through RRC signaling.

[0257] In some embodiments, multiple TCI states correspond to the transmission of multiple TRPs, including: multiple TCI states correspond to the transmission of multiple TRPs based on a single downlink control information, or multiple TCI states correspond to the transmission of multiple TRPs based on multiple downlink control information.

[0258] In some embodiments, the indication information is carried in a MAC CE.

[0259] Figure 5B is a structural diagram of a network device proposed in an embodiment of the present disclosure. As shown in Figure 5B, the network device 5200 may include: a transceiver module 5201 for receiving indication information, the indication information is used to indicate the TCI status code point in the TCI status code point pool, and the TCI status code point is used in the communication scenario of a downlink single transmission node and an uplink multiple transmission node; wherein the indication information is the TCI information indication field in the downlink control information, and different code points in the TCI status code point pool correspond to one or more TCI states, multiple TCI states correspond to multiple transmission nodes, and multiple TRPs are used for the terminal to perform downlink transmission and / or uplink transmission, and include a TRP dedicated to uplink transmission, and different TRPs are configured with different SRS resource sets with the function of beam management. Optionally, the above-mentioned transceiver module 5201 is used to perform at least one of the communication steps such as sending and / or receiving performed by the terminal 101 in any of the above methods (such as step S2101 but not limited thereto), which will not be repeated here.

[0260] In some embodiments, the transceiver module may include a transmitting module and / or a receiving module, and the transmitting module and the receiving module may be separate or integrated. Optionally, the transceiver module may be interchangeable with the transceiver.

[0261] In some embodiments, when the TCI status code point is configured as a hybrid TCI status indication mode or a joint TCI status indication mode, the indication information is used to indicate: a joint TCI status and an uplink TCI status.

[0262] In some embodiments, when the TCI status code point is configured as an independent TCI status indication mode, the indication information is used to indicate the uplink TCI status and the downlink TCI status.

[0263] In some embodiments, the indication information is used to indicate 1 joint TCI state and N uplink TCI states, where N is an integer less than or equal to 2.

[0264] In some embodiments, the bit width of the TCI information indication field corresponds to the number of TCI status code points.

[0265] In some embodiments, N is determined based on the number of multiple collaborative TRPs corresponding to the terminal, and the number of multiple collaborative TRPs corresponding to the terminal is determined based on the capability of the terminal; wherein, when N is 0, the terminal corresponds to S-TRP transmission; when N is 1 or 2, the terminal corresponds to M-TRP transmission.

[0266] In some embodiments, different TCI state code points correspond to one or more of the following TCI state types: joint TCI state; uplink TCI state; downlink TCI state; uplink TCI state corresponds to an independently configured TCI state code point pool, downlink TCI state and joint TCI state correspond to the same TCI state code point pool, and the independently configured TCI state code point pool and the same TCI state code point pool are configured respectively through RRC signaling.

[0267] In some embodiments, multiple TCI states correspond to the transmission of multiple TRPs, including: multiple TCI states correspond to the transmission of multiple TRPs based on a single downlink control information, or multiple TCI states correspond to the transmission of multiple TRPs based on multiple downlink control information.

[0268] In some embodiments, the indication information is carried in a MAC CE.

[0269] Figure 6 is a schematic diagram of the structure of a communication device 6100 proposed in an embodiment of the present disclosure. Communication device 6100 can be a network device (e.g., an access network device, a core network device, etc.), a terminal (e.g., a user equipment, etc.), a chip, a chip system, or a processor that supports a network device implementing any of the above methods, or a chip, a chip system, or a processor that supports a terminal implementing any of the above methods. Communication device 6100 can be used to implement the methods described in the above method embodiments. For details, please refer to the description of the above method embodiments.

[0270] As shown in Figure 6, the communication device 6100 includes one or more processors 6101. The processor 6101 can be a general-purpose processor or a dedicated processor, for example, a baseband processor or a central processing unit. The baseband processor can be used to process the communication protocol and communication data, and the central processing unit can be used to control the communication device (such as a base station, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, etc.), execute programs, and process program data. Optionally, the communication device 6100 is used to perform any of the above methods. Optionally, one or more processors 6101 are used to call instructions to enable the communication device 6100 to perform any of the above methods.

[0271] In some embodiments, the communication device 6100 further includes one or more transceivers 6102. When the communication device 6100 includes one or more transceivers 6102, the transceiver 6102 performs at least one of the communication steps such as sending and / or receiving in the above method (for example, step S2101, but not limited thereto), and the processor 6101 performs at least one of the other steps. In an optional embodiment, the transceiver may include a receiver and / or a transmitter, and the receiver and transmitter may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, transceiver circuit, interface circuit, and interface may be interchangeable, the terms transmitter, transmitting unit, transmitter, and transmitting circuit may be interchangeable, and the terms receiver, receiving unit, receiver, and receiving circuit may be interchangeable.

[0272] In some embodiments, the communication device 6100 further includes one or more memories 6103 for storing data. Alternatively, all or part of the memories 6103 may be located outside the communication device 6100. In alternative embodiments, the communication device 6100 may include one or more interface circuits 6104. Optionally, the interface circuits 6104 are connected to the memories 6103 and may be configured to receive data from the memories 6103 or other devices, or to send data to the memories 6103 or other devices. For example, the interface circuits 6104 may read data stored in the memories 6103 and send the data to the processor 6101.

[0273] The communication device 6100 described in the above embodiment may be a network device or a terminal, but the scope of the communication device 6100 described in the present disclosure is not limited thereto, and the structure of the communication device 6100 may not be limited by FIG. 6 . The communication device may be an independent device or may be part of a larger device. For example, the communication device may be: 1) an independent integrated circuit IC, or a chip, or a chip system or subsystem; (2) a collection of one or more ICs, optionally, the above IC collection may also include a storage component for storing data or programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handheld device, a mobile unit, an in-vehicle device, a network device, a cloud device, an artificial intelligence device, etc.; (6) others, etc.

[0274] 6B is a schematic diagram of the structure of a chip 6200 according to an embodiment of the present disclosure. If the communication device 6100 can be a chip or a chip system, reference can be made to the schematic diagram of the structure of the chip 6200 shown in FIG6B , but the present disclosure is not limited thereto.

[0275] The chip 6200 includes one or more processors 6201. The chip 6200 is configured to execute any of the above methods.

[0276] In some embodiments, chip 6200 further includes one or more interface circuits 6202. Terms such as interface circuit, interface, and transceiver pins may be used interchangeably. In some embodiments, chip 6200 further includes one or more memories 6203 for storing data. Alternatively, all or part of memory 6203 may be located external to chip 6200. Optionally, interface circuit 6202 is connected to memory 6203 and may be used to receive data from memory 6203 or other devices, or may be used to send data to memory 6203 or other devices. For example, interface circuit 6202 may read data stored in memory 6203 and send the data to processor 6201.

[0277] In some embodiments, the interface circuit 6202 performs at least one of the communication steps (e.g., but not limited to, step S2101) of the aforementioned method, such as sending and / or receiving. For example, the interface circuit 6202 performing the communication steps (e.g., sending and / or receiving) of the aforementioned method means that the interface circuit 6202 performs data exchange between the processor 6201, chip 6200, memory 6203, or a transceiver device. In some embodiments, the processor 6201 performs at least one of the other steps.

[0278] The modules and / or devices described in various embodiments, such as virtual devices, physical devices, and chips, can be arbitrarily combined or separated according to circumstances. Optionally, some or all steps can also be performed collaboratively by multiple modules and / or devices, which is not limited here.

[0279] The present disclosure also proposes a storage medium having instructions stored thereon. When the instructions are executed on the communication device 6100, the communication device 6100 executes any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but is not limited thereto and may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but is not limited thereto and may also be a temporary storage medium.

[0280] The present disclosure also provides a program product, which, when executed by the communication device 6100, enables the communication device 6100 to perform any of the above methods. Optionally, the program product is a computer program product.

[0281] The present disclosure also proposes a computer program, which, when executed on a computer, causes the computer to perform any one of the above methods.

Claims

1. A beam pointing method, characterized in that: The method comprises: The terminal receives indication information, where the indication information is used to indicate a TCI status code point in a TCI status code point pool, where the TCI status code point is used in a communication scenario of a downlink single transmission node S-TRP and an uplink multiple transmission nodes M-TRP; Among them, the indication information is the TCI information indication field in the downlink control information DCI, different code points in the TCI state code point pool correspond to one or more TCI states, multiple TCI states correspond to multiple transmission nodes TRP, and the multiple TRPs are used for the terminal to perform downlink transmission and / or uplink transmission, and include a TRP dedicated to uplink transmission, and different TRPs are configured with different SRS resource sets for beam management.

2. The method according to claim 1, characterized in that When the TCI status code point is configured in a hybrid TCI status indication mode or a joint TCI status indication mode, the indication information is used to indicate: Joint TCI status and uplink TCI status.

3. The method according to claim 1, characterized in that When the TCI status code point is configured as an independent TCI status indication mode, the indication information is used to indicate the uplink TCI status and the downlink TCI status.

4. The method according to claim 2, characterized in that The indication information is used to indicate 1 joint TCI state and N uplink TCI states, where N is an integer less than or equal to 2.

5. The method according to claim 1 or 4, characterized in that The bit width of the TCI information indication field corresponds to the number of the TCI status code points.

6. The method according to claim 4, characterized in that The N is determined based on the number of multiple cooperative TRPs corresponding to the terminal, and the number of multiple cooperative TRPs corresponding to the terminal is determined based on the capability of the terminal; Wherein, when the value of N is 0, the terminal corresponds to S-TRP transmission; When the value of N is 1 or 2, the terminal corresponds to M-TRP transmission.

7. The method according to claim 1 or 6, characterized in that The different TCI status code points correspond to one or more of the following TCI status types: Joint TCI status; Uplink TCI status; Downlink TCI status; The uplink TCI state corresponds to an independently configured TCI state code point pool, the downlink TCI state and the joint TCI state correspond to the same TCI state code point pool, and the independently configured TCI state code point pool and the same TCI state code point pool are respectively configured through RRC signaling.

8. The method according to claim 1, characterized in that The multiple TCI states correspond to the transmission of multiple TRPs, including: The multiple TCI states correspond to the transmission of multiple TRPs based on a single downlink control information S-DCI, or The multiple TCI states correspond to the transmission of multiple TRPs based on multiple downlink control information M-DCI.

9. The method according to any one of claims 1 to 8, characterized in that The indication information is carried in the Media Access Control Element (MAC CE).

10. A beam indication method, characterized in that: The method comprises: The network device sends indication information, where the indication information is used to indicate a TCI status code point in a TCI status code point pool, where the TCI status code point is used in a communication scenario of a downlink single transmission point S-TRP and an uplink multiple transmission points M-TRP; Among them, the indication information is the TCI information indication field in the downlink control information DCI, different code points in the TCI state code point pool correspond to one or more TCI states, multiple TCI states correspond to multiple transmission nodes TRP, and the multiple TRPs are used for the terminal to perform downlink transmission and / or uplink transmission, and include a TRP dedicated to uplink transmission, and different TRPs are configured with different SRS resource sets for beam management.

11. The method according to claim 10, characterized in that When the TCI status code point is configured in a hybrid TCI status indication mode or a joint TCI status indication mode, the indication information is used to indicate: Joint TCI status and uplink TCI status.

12. The method according to claim 10, characterized in that When the TCI status code point is configured as an independent TCI status indication mode, the indication information is used to indicate the uplink TCI status and the downlink TCI status.

13. The method according to claim 11, characterized in that The indication information is used to indicate 1 joint TCI state and N uplink TCI states, where N is an integer less than or equal to 2.

14. The method according to claim 10 or 13, characterized in that The bit width of the TCI information indication field corresponds to the number of the TCI status code points.

15. The method according to claim 13, characterized in that The N is determined based on the number of multiple cooperative TRPs corresponding to the terminal, and the number of multiple cooperative TRPs corresponding to the terminal is determined based on the capability of the terminal; Wherein, when the value of N is 0, the terminal corresponds to S-TRP transmission; When the value of N is 1 or 2, the terminal corresponds to M-TRP transmission.

16. The method according to claim 10 or 15, characterized in that The different TCI status code points correspond to one or more of the following TCI status types: Joint TCI status; Uplink TCI status; Downlink TCI status; The uplink TCI state corresponds to an independently configured TCI state code point pool, the downlink TCI state and the joint TCI state correspond to the same TCI state code point pool, and the independently configured TCI state code point pool and the same TCI state code point pool are respectively configured through RRC signaling.

17. The method according to claim 10, wherein: The multiple TCI states correspond to the transmission of multiple TRPs, including: The multiple TCI states correspond to the transmission of multiple TRPs based on a single downlink control information S-DCI, or The multiple TCI states correspond to the transmission of multiple TRPs based on multiple downlink control information M-DCI.

18. The method according to any one of claims 10 to 17, characterized in that The indication information is carried in the Media Access Control Element (MAC CE).

19. A beam indication method, characterized in that: The method comprises: The network device sends indication information, where the indication information is used to indicate a TCI status code point in a TCI status code point pool, where the TCI status code point is used in a communication scenario of a downlink single transmission point S-TRP and an uplink multiple transmission points M-TRP; The indication information is a TCI information indication field in the downlink control information DCI, different code points in the TCI state code point pool correspond to one or more TCI states, multiple TCI states correspond to multiple transmission nodes TRP, and the multiple TRPs are used for the terminal to perform downlink transmission and / or uplink transmission, and include a TRP dedicated to uplink transmission, and different TRPs are configured with different SRS resource sets with the function of beam management; The terminal receives the indication information.

20. A terminal, characterized in that: include: A transceiver module, configured to receive indication information, where the indication information is used to indicate a TCI status code point in a TCI status code point pool, where the TCI status code point is used in a communication scenario of a downlink single transmission node (S-TRP) and an uplink multiple transmission nodes (M-TRP); Among them, the indication information is the TCI information indication field in the downlink control information DCI, different code points in the TCI state code point pool correspond to one or more TCI states, multiple TCI states correspond to multiple transmission nodes TRP, and the multiple TRPs are used for the terminal to perform downlink transmission and / or uplink transmission, and include a TRP dedicated to uplink transmission, and different TRPs are configured with different SRS resource sets for beam management.

21. A network device, characterized in that: include: A transceiver module, configured to send indication information, where the indication information is used to indicate a TCI status code point in a TCI status code point pool, where the TCI status code point is used in a communication scenario of a downlink single transmission node (S-TRP) and an uplink multiple transmission nodes (M-TRP); Among them, the indication information is the TCI information indication field in the downlink control information DCI, different code points in the TCI state code point pool correspond to one or more TCI states, multiple TCI states correspond to multiple transmission nodes TRP, and the multiple TRPs are used for the terminal to perform downlink transmission and / or uplink transmission, and include a TRP dedicated to uplink transmission, and different TRPs are configured with different SRS resource sets for beam management.

22. A terminal, characterized in that: include: one or more processors; The processor is used to execute the beam indication method described in any one of claims 1 to 9.

23. A network device, characterized in that: include: one or more processors; The processor is used to execute the beam indication method described in any one of claims 10 to 18.

24. A communication system, characterized in that: include: A terminal and a network device, wherein the terminal is configured to implement the beam indication method described in any one of claims 1 to 9, and the network device is configured to implement the beam indication method described in any one of claims 10 to 18.

25. A storage medium storing instructions, characterized in that: When the instruction is executed on a communication device, the communication device is enabled to perform the beam indication method according to any one of claims 1 to 9 and 10 to 18.

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